^I feel that you are not putting yourself in Grey Worms shoes
I actually really enjoy Grey Worms parts. Just imagine all the things that he is feeling. He was a slave soldier essentially his entire life. He was never able to love someone let alone even given the chance to love someone. He is free now thanks to the great Dany Stormborn and is starting to actually FEEL things emotionally. Then when he learns that these feelings are pointless because of his lack of manhood, it must be really depressing. I think the scenes between Grey Worm and Missandei show a type of feeling that most would really find difficult to understand. I feel that is why a lot of people don't like these scenes.